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Garro-Núñez D, Picado-Martínez MJ, Espinoza-Campos E, Ugalde-Araya D, Macaya G, Raventós H, Chavarría-Soley G. Systematic exploration of a decade of publications on psychiatric genetics in Latin America. Am J Med Genet B Neuropsychiatr Genet 2024; 195:e32960. [PMID: 37860990 DOI: 10.1002/ajmg.b.32960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 08/08/2023] [Accepted: 09/29/2023] [Indexed: 10/21/2023]
Abstract
Psychiatric disorders have a great impact in terms of mortality, morbidity, and disability across the lifespan. Considerable effort has been devoted to understanding their complex and heterogeneous genetic architecture, including diverse ancestry populations. Our aim was to review the psychiatric genetics research published with Latin American populations from 2010 to 2019, and classify it according to country of origin, type of analysis, source of funding, and other variables. We found that most publications came from Brazil, Mexico, and Colombia. Also, local funds are generally not large enough for genome-wide studies in Latin America, with the exception of Brazil and Mexico; larger studies are often done in collaboration with international partners, mostly funded by US agencies. In most of the larger studies, the participants are individuals of Latin American ancestry living in the United States, which limits the potential for exploring the complex gene-environment interaction. Family studies, traditionally strong in Latin America, represent about 30% of the total research publications. Scarce local resources for research in Latin America have probably been an important limitation for conducting bigger and more complex studies, contributing to the reduced representation of these populations in global psychiatric genetics studies. Increasing diversity must be a goal to improve generalizability and applicability in clinical settings.
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Affiliation(s)
| | | | | | - Daniela Ugalde-Araya
- Center for Research in Cellular and Molecular Biology, Universidad de Costa Rica, San José, Costa Rica
| | - Gabriel Macaya
- Center for Research in Cellular and Molecular Biology, Universidad de Costa Rica, San José, Costa Rica
| | - Henriette Raventós
- Biology School, Universidad de Costa Rica, San José, Costa Rica
- Center for Research in Cellular and Molecular Biology, Universidad de Costa Rica, San José, Costa Rica
| | - Gabriela Chavarría-Soley
- Biology School, Universidad de Costa Rica, San José, Costa Rica
- Center for Research in Cellular and Molecular Biology, Universidad de Costa Rica, San José, Costa Rica
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2
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Ajayi T, Thomas A, Nikolic M, Henderson L, Zaheri A, Dwyer DS. Evolutionary conservation of putative suicidality-related risk genes that produce diminished motivation corrected by clozapine, lithium and antidepressants. Front Psychiatry 2024; 15:1341735. [PMID: 38362034 PMCID: PMC10867104 DOI: 10.3389/fpsyt.2024.1341735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/17/2024] [Indexed: 02/17/2024] Open
Abstract
Background Genome wide association studies (GWAS) and candidate gene analyses have identified genetic variants and genes that may increase the risk for suicidal thoughts and behaviors (STBs). Important unresolved issues surround these tentative risk variants such as the characteristics of the associated genes and how they might elicit STBs. Methods Putative suicidality-related risk genes (PSRGs) were identified by comprehensive literature search and were characterized with respect to evolutionary conservation, participation in gene interaction networks and associated phenotypes. Evolutionary conservation was established with database searches and BLASTP queries, whereas gene-gene interactions were ascertained with GeneMANIA. We then examined whether mutations in risk-gene counterparts in C. elegans produced a diminished motivation phenotype previously connected to suicide risk factors. Results and conclusions From the analysis, 105 risk-gene candidates were identified and found to be: 1) highly conserved during evolution, 2) enriched for essential genes, 3) involved in significant gene-gene interactions, and 4) associated with psychiatric disorders, metabolic disturbances and asthma/allergy. Evaluation of 17 mutant strains with loss-of-function/deletion mutations in PSRG orthologs revealed that 11 mutants showed significant evidence of diminished motivation that manifested as immobility in a foraging assay. Immobility was corrected in some or all of the mutants with clozapine, lithium and tricyclic antidepressant drugs. In addition, 5-HT2 receptor and muscarinic receptor antagonists restored goal-directed behavior in most or all of the mutants. These studies increase confidence in the validity of the PSRGs and provide initial clues about possible mechanisms that mediate STBs.
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Affiliation(s)
- Titilade Ajayi
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Shreveport, Shreveport, LA, United States
| | - Alicia Thomas
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Shreveport, Shreveport, LA, United States
| | - Marko Nikolic
- Department of Psychiatry and Behavioral Medicine, LSU Health Shreveport, Shreveport, LA, United States
| | - Lauryn Henderson
- Department of Psychiatry and Behavioral Medicine, LSU Health Shreveport, Shreveport, LA, United States
| | - Alexa Zaheri
- Department of Psychiatry and Behavioral Medicine, LSU Health Shreveport, Shreveport, LA, United States
| | - Donard S. Dwyer
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Shreveport, Shreveport, LA, United States
- Department of Psychiatry and Behavioral Medicine, LSU Health Shreveport, Shreveport, LA, United States
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3
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Garcia-Quiñones JA, Sánchez-Domínguez CN, Serna-Rodríguez MF, Marino-Martínez IA, Rivas-Estilla AM, Pérez-Maya AA. Genetic Variants Associated with Suicide Risk in the Mexican Population: A Systematic Literature Review. Arch Suicide Res 2024; 28:71-89. [PMID: 36772904 DOI: 10.1080/13811118.2023.2176269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Suicide is defined as the action of harming oneself with the intention of dying. It is estimated that worldwide, one person dies by suicide every 40 s, making it a major health problem. Studies in families have suggested that suicide has a genetic component, so the search for genetic variants associated with suicidal behavior could be useful as potential biomarkers to identify people at risk of suicide. In Mexico, some studies of gene variants related to neurotransmission and other important pathways have been carried out and potential association of variants located in the following genes has been suggested: SLC6A4, SAT-1, TPH-2, ANKK1, GSHR, SCARA50, RGS10, STK33, COMT, and FKBP5. This systematic review shows the genetic studies conducted on the Mexican population. This article contributes by compiling the existing information on genetic variants and genes associated with suicidal behavior, in the future could be used as potential biomarkers to identify people at risk of suicide.
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Castillo-Avila RG, Genis-Mendoza AD, Juárez-Rojop IE, López-Narváez ML, Dionisio-García DM, Nolasco-Rosales GA, Ramos-Méndez MÁ, Hernández-Díaz Y, Tovilla-Zárate CA, González-Castro TB, Nicolini H. High Serum Levels of IL-6 Are Associated with Suicide Attempt but Not with High Lethality Suicide Attempts: A Preliminary Case-Control Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:14735. [PMID: 36429454 PMCID: PMC9690459 DOI: 10.3390/ijerph192214735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/05/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
Suicide attempts are an emerging health problem around the world. Increased levels of IL-6 have been associated with suicidal behavior. Therefore, the aims of this study were to evaluate the serum levels of IL-6 in individuals with suicide attempts and a comparison group and to associate the IL-6 levels with the lethality of the suicide attempt. Additionally, we associated the rs2228145 polymorphism of the IL6R gene with suicide attempts or with the IL-6 serum levels. Suicide attempts and their lethality were evaluated using the Columbia Suicide Severity Rating Scale. The serum concentrations of IL-6 were measured by the ELISA technique in individuals with suicide attempts and then compared to a control group. The rs2228145 polymorphism of the IL6R gene was analyzed by real-time polymerase chain reaction. We found elevated serum levels of IL-6 in the suicide attempt group when compared to the control group (F = 10.37, p = 0.002). However, we found no differences of the IL-6 levels between high and low lethality. The IL6R gene polymorphism rs2479409 was not associated with suicide attempts. Our data suggest that IL-6 serum is increased in individuals with suicide attempts.
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Affiliation(s)
| | - Alma Delia Genis-Mendoza
- Laboratorio de Genómica de Enfermedades Psiquiátricas y Neurodegenerativas, Instituto Nacional de Medicina Genómica, Ciudad de Mexico 14610, Mexico
| | - Isela Esther Juárez-Rojop
- División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa 86100, Mexico
| | - María Lilia López-Narváez
- Hospital Chiapas Nos Une “Dr. Gilberto Gómez Maza”, Secretaría de Salud, Tuxtla Gutierrez 29045, Mexico
| | - Diana María Dionisio-García
- División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa 86100, Mexico
| | | | - Miguel Ángel Ramos-Méndez
- División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa 86100, Mexico
| | - Yazmín Hernández-Díaz
- División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Jalpa de Mendez 86040, Mexico
| | - Carlos Alfonso Tovilla-Zárate
- División Académica Multidisciplinaria de Comalcalco, Universidad Juárez Autónoma de Tabasco, Comalcalco 86040, Mexico
| | - Thelma Beatriz González-Castro
- División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Jalpa de Mendez 86040, Mexico
| | - Humberto Nicolini
- Laboratorio de Genómica de Enfermedades Psiquiátricas y Neurodegenerativas, Instituto Nacional de Medicina Genómica, Ciudad de Mexico 14610, Mexico
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5
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Mirza S, Docherty AR, Bakian A, Coon H, Soares JC, Walss-Bass C, Fries GR. Genetics and epigenetics of self-injurious thoughts and behaviors: Systematic review of the suicide literature and methodological considerations. Am J Med Genet B Neuropsychiatr Genet 2022; 189:221-246. [PMID: 35975759 PMCID: PMC9900606 DOI: 10.1002/ajmg.b.32917] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/26/2022] [Accepted: 07/26/2022] [Indexed: 02/01/2023]
Abstract
Suicide is a multifaceted and poorly understood clinical outcome, and there is an urgent need to advance research on its phenomenology and etiology. Epidemiological studies have demonstrated that suicidal behavior is heritable, suggesting that genetic and epigenetic information may serve as biomarkers for suicide risk. Here we systematically review the literature on genetic and epigenetic alterations observed in phenotypes across the full range of self-injurious thoughts and behaviors (SITB). We included 577 studies focused on genome-wide and epigenome-wide associations, candidate genes (SNP and methylation), noncoding RNAs, and histones. Convergence of specific genes is limited across units of analysis, although pathway-based analyses do indicate nervous system development and function and immunity/inflammation as potential underlying mechanisms of SITB. We provide suggestions for future work on the genetic and epigenetic correlates of SITB with a specific focus on measurement issues.
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Affiliation(s)
- Salahudeen Mirza
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), Houston, Texas, USA,Institute of Child Development, University of Minnesota, Minneapolis, Minnesota, USA
| | - Anna R. Docherty
- Department of Psychiatry, University of Utah School of Medicine, Salt Lake City, Utah, USA,Huntsman Mental Health Institute, Salt Lake City, Utah, USA,Department of Psychiatry, The Virginia Commonwealth University, Richmond, Virginia, USA
| | - Amanda Bakian
- Department of Psychiatry, University of Utah School of Medicine, Salt Lake City, Utah, USA,Huntsman Mental Health Institute, Salt Lake City, Utah, USA
| | - Hilary Coon
- Department of Psychiatry, University of Utah School of Medicine, Salt Lake City, Utah, USA,Huntsman Mental Health Institute, Salt Lake City, Utah, USA
| | - Jair C. Soares
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), Houston, Texas, USA,Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, Texas, USA
| | - Consuelo Walss-Bass
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), Houston, Texas, USA,Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, Texas, USA
| | - Gabriel R. Fries
- Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, (UTHealth), Houston, Texas, USA,Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, Texas, USA,Center for Precision Health, School of Biomedical Informatics, The University of Texas Health Science Center at Houston (UTHealth), Houston, Texas, USA
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6
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McPherson P, Sall S, Santos A, Thompson W, Dwyer DS. Catalytic Reaction Model of Suicide. Front Psychiatry 2022; 13:817224. [PMID: 35356712 PMCID: PMC8959568 DOI: 10.3389/fpsyt.2022.817224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 02/07/2022] [Indexed: 12/20/2022] Open
Abstract
Suicide is a devastating outcome of unresolved issues that affect mental health, general wellbeing and socioeconomic stress. The biology of suicidal behavior is still poorly understood, although progress has been made. Suicidal behavior runs in families and genetic studies have provided initial glimpses into potential genes that contribute to suicide risk. Here, we attempt to unify the biology and behavioral dimensions into a model that can guide research in this area. The proposed model envisions suicidal behavior as a catalytic reaction that may result in suicide depending on the conditions, analogously to enzyme catalysis of chemical reactions. A wide array of substrates or reactants, such as hopelessness, depression, debilitating illnesses and diminished motivation can mobilize suicidal thoughts and behaviors (STBs), which can then catalyze the final step/act of suicide. Here, we focus on three biological substrates in particular: threat assessment, motivation to engage in life and impulsivity. Genetic risk factors can affect each of these processes and tilt the balance toward suicidal behavior when existential crises (real or perceived) emerge such as loss of a loved one, sudden changes in social status or serious health issues. Although suicide is a uniquely human behavior, many of the fundamental biological processes are evolutionarily conserved. Insights from animal models may help to shape our understanding of suicidal behavior in man. By examining counterparts of the major biological processes in other organisms, new ideas about the role of genetic risk factors may emerge along with possible therapeutic interventions or preventive measures.
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Affiliation(s)
- Pamela McPherson
- Department of Psychiatry and Behavioral Medicine, Shreveport, LA, United States
| | - Saveen Sall
- Department of Psychiatry and Behavioral Medicine, Shreveport, LA, United States
| | - Aurianna Santos
- Department of Psychiatry and Behavioral Medicine, Shreveport, LA, United States
| | - Willie Thompson
- Department of Psychiatry and Behavioral Medicine, Shreveport, LA, United States
| | - Donard S Dwyer
- Department of Psychiatry and Behavioral Medicine, Shreveport, LA, United States.,Department of Pharmacology, Toxicology and Neuroscience, LSU Health Shreveport, Shreveport, LA, United States
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7
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Martinez-Levy GA, Campos AI, Rabinowitz JA, García-Marín LM, Benjet C, Méndez E, Rentería ME, Cruz-Fuentes CS. Suicidal ideation and planning among Mexican adolescents are associated with depression polygenic risk scores. Am J Med Genet B Neuropsychiatr Genet 2021; 186:476-484. [PMID: 34173322 DOI: 10.1002/ajmg.b.32864] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/10/2021] [Accepted: 06/05/2021] [Indexed: 01/04/2023]
Abstract
Suicide is a major public health problem in Mexico and around the world. Genetic predisposition for major depressive disorder (MDD) has been associated with increased risk for suicidal behaviors (SB) in populations of European ancestry (EA). Here, we examine whether MDD polygenic risk scores (MDD PRS), derived from a genome-wide association study involving EA individuals, predict SB, including ideation, planning, and attempt, among Mexican youth using a longitudinal design. At baseline, participants (N = 1,128, 12-17 years, 55% women) were interviewed and genotyped as part of a general population survey on adolescent mental health. Eight years later, they were recontacted for a follow up visit (N = 437, 20-25 years, 63% women). At both assessments, individuals reported on their engagement in SB within the past year. MDD PRS were significantly positively associated with SB, particularly suicide ideation and planning during adolescence, accounting for ~4-5% of the variance in these outcomes. In contrast, associations between MDD PRS and SB during young adulthood did not reach statistical significance. Our results suggest that increased genetic liability for depression increased risk for SB, particularly during adolescence, expanding our knowledge of the genetic underpinnings of SB.
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Affiliation(s)
- Gabriela A Martinez-Levy
- Departamento de Genética, Instituto Nacional de Psiquiatría "Ramón de la Fuente Muñíz", Mexico City, Mexico
| | - Adrian I Campos
- Department of Genetics and Computational Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia.,School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Jill A Rabinowitz
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Luis M García-Marín
- Department of Genetics and Computational Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Corina Benjet
- Dirección de Investigaciones Epidemiológicas y Psicosociales, Instituto Nacional de Psiquiatría "Ramón de la Fuente Muñíz", Mexico City, Mexico
| | - Enrique Méndez
- Dirección de Investigaciones Epidemiológicas y Psicosociales, Instituto Nacional de Psiquiatría "Ramón de la Fuente Muñíz", Mexico City, Mexico
| | - Miguel E Rentería
- Department of Genetics and Computational Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia.,School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Carlos S Cruz-Fuentes
- Departamento de Genética, Instituto Nacional de Psiquiatría "Ramón de la Fuente Muñíz", Mexico City, Mexico
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8
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DiBlasi E, Kang J, Docherty AR. Genetic contributions to suicidal thoughts and behaviors. Psychol Med 2021; 51:2148-2155. [PMID: 34030748 PMCID: PMC8477225 DOI: 10.1017/s0033291721001720] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 03/28/2021] [Accepted: 04/19/2021] [Indexed: 12/27/2022]
Abstract
Suicidal ideation, suicide attempt (SA) and suicide are significantly heritable phenotypes. However, the extent to which these phenotypes share genetic architecture is unclear. This question is of great relevance to determining key risk factors for suicide, and to alleviate the societal burden of suicidal thoughts and behaviors (STBs). To help address the question of heterogeneity, consortia efforts have recently shifted from a focus on suicide within the context of major psychopathology (e.g. major depressive disorder, schizophrenia) to suicide as an independent entity. Recent molecular studies of suicide risk by members of the Psychiatric Genomics Consortium and the International Suicide Genetics Consortium have identified genome-wide significant loci associated with SA and with suicide death, and have examined these phenotypes within and outside of the context of major psychopathology. This review summarizes important insights from epidemiological and biometrical research on suicide, and discusses key empirical findings from molecular genetic examinations of STBs. Polygenic risk scores for these phenotypes have been observed to be associated with case-control status and other risk phenotypes. In addition, estimated shared genetic covariance with other phenotypes suggests specific medical and psychiatric risks beyond major depressive disorder. Broadly, molecular studies suggest a complexity of suicide etiology that cannot simply be accounted for by depression. Discussion of the state of suicide genetics, a growing field, also includes important ethical and clinical implications of studying the genetic risk of suicide.
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Affiliation(s)
- Emily DiBlasi
- Department of Psychiatry & the Center for Genomic Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA
- Huntsman Mental Health Institute, Salt Lake City, UT, USA
| | - Jooeun Kang
- Division of Genetic Medicine, Department of Medicine, Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Anna R. Docherty
- Department of Psychiatry & the Center for Genomic Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA
- Huntsman Mental Health Institute, Salt Lake City, UT, USA
- Virginia Institute for Psychiatric & Behavioral Genetics, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
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9
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Hathy E, Szabó E, Varga N, Erdei Z, Tordai C, Czehlár B, Baradits M, Jezsó B, Koller J, Nagy L, Molnár MJ, Homolya L, Nemoda Z, Apáti Á, Réthelyi JM. Investigation of de novo mutations in a schizophrenia case-parent trio by induced pluripotent stem cell-based in vitro disease modeling: convergence of schizophrenia- and autism-related cellular phenotypes. Stem Cell Res Ther 2020; 11:504. [PMID: 33246498 PMCID: PMC7694414 DOI: 10.1186/s13287-020-01980-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 10/18/2020] [Indexed: 12/30/2022] Open
Abstract
Background De novo mutations (DNMs) have been implicated in the etiology of schizophrenia (SZ), a chronic debilitating psychiatric disorder characterized by hallucinations, delusions, cognitive dysfunction, and decreased community functioning. Several DNMs have been identified by examining SZ cases and their unaffected parents; however, in most cases, the biological significance of these mutations remains elusive. To overcome this limitation, we have developed an approach of using induced pluripotent stem cell (iPSC) lines from each member of a SZ case-parent trio, in order to investigate the effects of DNMs in cellular progenies of interest, particularly in dentate gyrus neuronal progenitors. Methods We identified a male SZ patient characterized by early disease onset and negative symptoms, who is a carrier of 3 non-synonymous DNMs in genes LRRC7, KHSRP, and KIR2DL1. iPSC lines were generated from his and his parents’ peripheral blood mononuclear cells using Sendai virus-based reprogramming and differentiated into neuronal progenitor cells (NPCs) and hippocampal dentate gyrus granule cells. We used RNASeq to explore transcriptomic differences and calcium (Ca2+) imaging, cell proliferation, migration, oxidative stress, and mitochondrial assays to characterize the investigated NPC lines. Results NPCs derived from the SZ patient exhibited transcriptomic differences related to Wnt signaling, neuronal differentiation, axonal guidance and synaptic function, and decreased Ca2+ reactivity to glutamate. Moreover, we could observe increased cellular proliferation and alterations in mitochondrial quantity and morphology. Conclusions The approach of reprograming case-parent trios represents an opportunity for investigating the molecular effects of disease-causing mutations and comparing these in cell lines with reduced variation in genetic background. Our results are indicative of a partial overlap between schizophrenia and autism-related phenotypes in the investigated family. Limitations Our study investigated only one family; therefore, the generalizability of findings is limited. We could not derive iPSCs from two other siblings to test for possible genetic effects in the family that are not driven by DNMs. The transcriptomic and functional assays were limited to the NPC stage, although these variables should also be investigated at the mature neuronal stage.
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Affiliation(s)
- Edit Hathy
- National Brain Research Project (NAP) Molecular Psychiatry Research Group, Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Eszter Szabó
- Molecular Cell Biology Research Group, Institute of Enzymology, Research Center for Natural Sciences, 1117 Magyar tudósok körútja 2, Budapest, Hungary
| | - Nóra Varga
- Molecular Cell Biology Research Group, Institute of Enzymology, Research Center for Natural Sciences, 1117 Magyar tudósok körútja 2, Budapest, Hungary
| | - Zsuzsa Erdei
- Molecular Cell Biology Research Group, Institute of Enzymology, Research Center for Natural Sciences, 1117 Magyar tudósok körútja 2, Budapest, Hungary
| | - Csongor Tordai
- National Brain Research Project (NAP) Molecular Psychiatry Research Group, Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Boróka Czehlár
- National Brain Research Project (NAP) Molecular Psychiatry Research Group, Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Máté Baradits
- National Brain Research Project (NAP) Molecular Psychiatry Research Group, Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - Bálint Jezsó
- Molecular Cell Biology Research Group, Institute of Enzymology, Research Center for Natural Sciences, 1117 Magyar tudósok körútja 2, Budapest, Hungary
| | - Júlia Koller
- Institute of Rare Disorders and Genomic Medicine, Semmelweis University, Budapest, Hungary
| | - László Nagy
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Mária Judit Molnár
- Institute of Rare Disorders and Genomic Medicine, Semmelweis University, Budapest, Hungary
| | - László Homolya
- Molecular Cell Biology Research Group, Institute of Enzymology, Research Center for Natural Sciences, 1117 Magyar tudósok körútja 2, Budapest, Hungary
| | - Zsófia Nemoda
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | - Ágota Apáti
- Molecular Cell Biology Research Group, Institute of Enzymology, Research Center for Natural Sciences, 1117 Magyar tudósok körútja 2, Budapest, Hungary.
| | - János M Réthelyi
- National Brain Research Project (NAP) Molecular Psychiatry Research Group, Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary. .,Department of Psychiatry and Psychotherapy, Semmelweis University, Balassa utca 6, Budapest, 1083, Hungary.
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10
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González-Castro TB, Martínez-Magaña JJ, Tovilla-Zárate CA, Juárez-Rojop IE, Sarmiento E, Genis-Mendoza AD, Nicolini H. Gene-level genome-wide association analysis of suicide attempt, a preliminary study in a psychiatric Mexican population. Mol Genet Genomic Med 2019; 7:e983. [PMID: 31578828 PMCID: PMC6900393 DOI: 10.1002/mgg3.983] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 08/20/2019] [Accepted: 09/03/2019] [Indexed: 12/11/2022] Open
Abstract
Background Evidence suggests that liability for suicide behavior is heritable; additionally, suicide has been partly related to other psychiatric disorders. Nevertheless, most of the information reported so far address Caucasian and Asian individuals. Hence, our aim was to conduct a gene‐level association study in Mexican psychiatric individuals diagnosed with suicide attempt. Methods We recruited 192 individuals from two clinical centers in Mexico. All participants were born in Mexico and had Mexican parents and grandparents. Direct genotyping was performed using the commercial platform Infinium PsychArray BeadChip. A p‐value lower than 1e‐05 was considered as gene‐level significant and a p‐value lower than 1e‐04 was considered as gene‐level nominal significant. Results Our analyses showed that SCARA5 was associated to suicide intent at a gene‐level with statistical significance (p‐value = 1.12e‐6). Other genes were nominally associated with suicide attempt: GHSR (p‐value = 0.0004), RGS10 (p‐value = 5.13e‐5), and STK33 (p‐value = 3.62e‐5). Regarding gene variant analyses, the SNPs with a statistical association (p > .05) were rs561361616, rs1537577, rs11198999 for RGS10, and rs11041981, rs11041993, rs11041994, rs11041995, rs11041997, rs10840083, rs10769918 for STK33. For these genes, previous studies have associated SCARA5 with depression, GHSR with alcohol dependence and depression, and RGS10 with schizophrenia and depression. To date, STK33 has not been associated with any psychiatric disorder. Conclusion Our outcomes revealed that SCARA5, GHSR, RGS10 and STK33 could be considered as risk biomarkers for suicide attempt behavior in our Mexican psychiatric sample. We recommend to perform larger scale analyses to have conclusive results.
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Affiliation(s)
- Thelma Beatriz González-Castro
- División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Mexico City, Mexico.,División Académica Multidisciplinaria de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa, Mexico
| | - José Jaime Martínez-Magaña
- División Académica Multidisciplinaria de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa, Mexico.,Instituto Nacional de Medicina Genómica (INMEGEN), Secretaria de Salud, Mexico City, Mexico
| | | | - Isela Esther Juárez-Rojop
- División Académica Multidisciplinaria de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa, Mexico
| | - Emmanuel Sarmiento
- Hospital Psiquiátrico Infantil "Dr. Juan N. Navarro", Mexico City, Mexico
| | - Alma Delia Genis-Mendoza
- Instituto Nacional de Medicina Genómica (INMEGEN), Secretaria de Salud, Mexico City, Mexico.,Hospital Psiquiátrico Infantil "Dr. Juan N. Navarro", Mexico City, Mexico
| | - Humberto Nicolini
- Instituto Nacional de Medicina Genómica (INMEGEN), Secretaria de Salud, Mexico City, Mexico
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